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Corrosion around cylinder bores
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rs58rag
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PostPosted: Sat Jul 02, 2016 11:13 am    Post subject: Re: Corrosion around cylinder bores Reply with quote

Permatex ultra copper silicone to seal cylinders to case....
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bugguy1967
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PostPosted: Sat Jul 02, 2016 9:04 am    Post subject: Re: Corrosion around cylinder bores Reply with quote

Who did that machine work? Looks like EMW in Hawthorne.
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Rome
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PostPosted: Fri Jul 01, 2016 6:11 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

matta, very good work with your photos- sharp, well lit. Wish I could reach thru the computer and run my fingers lightly over the machined surfaces.
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mark tucker
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PostPosted: Fri Jul 01, 2016 5:26 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

looks like a good job but should of went about .040 farther. shims are sheep...and seals are wet....unless there sunning them selves. Rolling Eyes
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miniman82
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PostPosted: Fri Jul 01, 2016 12:01 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

Whoever did that must have a pretty sharp flycutter for it to clean up that good, looking at it beforehand I bet you didn't think it would turn out that clean. Laughing
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modok
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PostPosted: Thu Jun 30, 2016 4:33 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

it's alrady cut .040 approx

dab 518 in the pot-holes, it'll work
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powerbee1
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PostPosted: Thu Jun 30, 2016 4:23 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

cut deck .100 use spacer for right deck height:D
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Mattasmith12
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PostPosted: Thu Jun 30, 2016 3:53 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

Thanks for the input! That turned my day around. I'll move forward as planned.
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vwracerdave
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PostPosted: Thu Jun 30, 2016 3:38 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

I'd run it. It is not in a pressurized oil stream so the silicone will do it's job and seal it up.
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miniman82
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PostPosted: Thu Jun 30, 2016 3:05 pm    Post subject: Re: Corrosion around cylinder bores Reply with quote

It'll seal fine, why wouldn't it? None of that damage connects a point from inside the engine to the outside, and you're going to use sealant anyway. I've always used silicone in this area of the engine, but nowhere else!
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Mattasmith12
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PostPosted: Thu Jun 30, 2016 2:38 pm    Post subject: Corrosion around cylinder bores Reply with quote

I have a case that was cleaned and bored for 90.5 cylinders. Unfortunately, the machine shop found some corrosion around the bores. Am I right to assume this case is garbage now since the cylinders won't seal correctly?
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